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SubjectRe: [RFC] powerpc: Enable UBSAN support
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On 10/12/15 11:42, Daniel Axtens wrote:
> This hooks up UBSAN support for PowerPC.
>
> So far it's found some interesting cases where we don't properly sanitise
> input to shifts, including one in our futex handling. Nothing critical,
> but interesting and worth fixing.
>
> CC: Andrey Ryabinin <aryabinin@virtuozzo.com>
> ---
>
> This to be applied on top of next with Andrey's patches:
> 1) https://patchwork.kernel.org/patch/7761341/
> 2) https://patchwork.kernel.org/patch/7761351/
> 3) https://patchwork.kernel.org/patch/7761361/
> 4) https://patchwork.kernel.org/patch/7785791/
>
> This is RFC for a couple of reasons:
>
> - I'd like the original patches to
> s/ARCH_HAS_UBSAN_SANTIZE_ALL/ARCH_HAS_UBSAN_SAN*I*TIZE_ALL/
> (I'm about to send an email about that)
>
> - I've only tested on LE pseries so far - I want to test on powernv,
> and on BE.
>
> Signed-off-by: Daniel Axtens <dja@axtens.net>

I tested this patch as found in linux-next, along with the SANITIZE_ALL
typo fix, on a big-endian BML system, with gcc 5.2.1. It successfully
picked up one of the shift input issues that Daniel found, so therefore...

Tested-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>

--
Andrew Donnellan Software Engineer, OzLabs
andrew.donnellan@au1.ibm.com Australia Development Lab, Canberra
+61 2 6201 8874 (work) IBM Australia Limited



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